Sorry if I upset you guys
No, not Romanian, and not Canadian either (never said I was).
This was in my backpacking youth, a few months before the cavity search inducing events of 9/11.
Could be that I got scammed by border control, but more likely the fee was there to finance the border crossing through stupid tourists (like myself) walking across the border rather than through tax payer money. Don't believe the fee applied to Canadians/US-citizens.